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CVE-2024-53818· NVD / CVE Program· CNA Patchstack

WordPress PostX plugin <= 4.1.15 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post.This issue affects PostX: from n/a through <= 4.1.15.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Dec 9, 2024
Updated
Jun 17, 2026
EPSS
0.4% · 27th percentile
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Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Patchstack
6.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Patchstack). Independent of NVD's CPE analysis and usually ahead of it.

  • WPXPO PostX

    • up to and including 4.1.15affectedfixed in 4.1.16

Same product

wpxpo: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-10728PostX <= 4.1.16 - Missing Authorization to Arbitrary Plugin Installation/Activation
    47Plan
  • CVE-2024-31246WordPress PostX plugin <= 3.2.3 - Author+ Post/Page Duplication vulnerability
    35Monitor
  • CVE-2025-69313WordPress PostX plugin <= 5.0.3 - Broken Access Control vulnerability
    30Monitor
  • CVE-2025-55707WordPress PostX Plugin <= 4.1.35 - Privilege Escalation Vulnerability
    28Monitor
  • CVE-2025-54751WordPress PostX plugin <= 4.1.36 - Broken Access Control vulnerability
    28Monitor
  • CVE-2024-4305PostX < 4.1.0 - Contributor+ Stored XSS
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
WPXPO PostX4.1.16Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-4305175 days apartPostX < 4.1.0 - Contributor+ Stored XSS
    27Monitor
  • CVE-2025-31096109 days apartWordPress PostX plugin <= 4.1.25 - Cross Site Scripting (XSS) Vulnerability
    26Monitor
  • CVE-2024-32564235 days apartWordPress PostX plugin <= 4.0.1 - Cross Site Scripting (XSS) vulnerability
    26Monitor
  • CVE-2023-3992467 days apartPostX - Gutenberg Post Grid Blocks < 3.0.6 - Reflected Cross-Site Scripting
    24Monitor
  • CVE-2023-36385503 days apartWordPress PostX – Gutenberg Blocks for Post Grid Plugin <= 2.9.9 is vulnerable to Cross Site Scripting (XSS)
    24Monitor
  • CVE-2024-5051320 days apartWordPress PostX plugin <= 4.1.15 - Cross Site Scripting (XSS) vulnerability
    23Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
low · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
Low

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records